[ecash-herald] Parse token actions in daily summary msgs

Summary:
Commence parsing token txs.

It's a lot, so this diff is limited to SLP1. We add counters for unparsed token txs, and logging for txs where we may want to see the txid for further testing / parsing.

Test Plan: npm test

Reviewers: #bitcoin_abc, tobias_ruck

Reviewed By: #bitcoin_abc, tobias_ruck

Differential Revision: https://reviews.bitcoinabc.org/D16990